1) Buddy List user 2) Certain dial-up subscriber 3) Certain IM user 4) Certain internet chatter 5) Certain ISP user 6) Certain Net user 7) Certain netizen 8) Certain Web surfer 9) Frequent chatter 10) Im user 11) Instant message recipient 12) Instant message sender 13) Instant messenger user 14) Longtime Web browser 
Feel free to edit this list or discuss these tasks. ...